use std::{borrow::Cow, str::FromStr as _};
use http::header::{HeaderName, InvalidHeaderName};
pub trait AsHeaderName: Sealed {}
pub struct Seal;
pub trait Sealed {
fn try_as_name(&self, seal: Seal) -> Result<Cow<'_, HeaderName>, InvalidHeaderName>;
}
impl Sealed for HeaderName {
#[inline]
fn try_as_name(&self, _: Seal) -> Result<Cow<'_, HeaderName>, InvalidHeaderName> {
Ok(Cow::Borrowed(self))
}
}
impl AsHeaderName for HeaderName {}
impl Sealed for &HeaderName {
#[inline]
fn try_as_name(&self, _: Seal) -> Result<Cow<'_, HeaderName>, InvalidHeaderName> {
Ok(Cow::Borrowed(*self))
}
}
impl AsHeaderName for &HeaderName {}
impl Sealed for &str {
#[inline]
fn try_as_name(&self, _: Seal) -> Result<Cow<'_, HeaderName>, InvalidHeaderName> {
HeaderName::from_str(self).map(Cow::Owned)
}
}
impl AsHeaderName for &str {}
impl Sealed for String {
#[inline]
fn try_as_name(&self, _: Seal) -> Result<Cow<'_, HeaderName>, InvalidHeaderName> {
HeaderName::from_str(self).map(Cow::Owned)
}
}
impl AsHeaderName for String {}
impl Sealed for &String {
#[inline]
fn try_as_name(&self, _: Seal) -> Result<Cow<'_, HeaderName>, InvalidHeaderName> {
HeaderName::from_str(self).map(Cow::Owned)
}
}
impl AsHeaderName for &String {}